Characterization of isomeric [CH5P]+˙ and [C2H7P]+˙ radical cations and some [C2H6P]+ phosphonium ions in the gas phase by their collisional activation spectra

1983 ◽  
Vol 18 (8) ◽  
pp. 327-330 ◽  
Author(s):  
E. Weger ◽  
K. Levsen ◽  
I. Ruppert ◽  
P. C. Burgers ◽  
J. K. Terlouw
Keyword(s):  
Gas Phase ◽  
Collisional Activation ◽  
Radical Cations

Formation and characterization of methoxy isothiocyanate (CH3ONCS) and methyl cyanate N-sulfide (CH3OCN+–S−) as radical cations and neutrals in the gas phase

1999 ◽  
pp. 1683-1688 ◽  
Author(s):  
Robert Flammang ◽  
Pascal Gerbaux ◽  
Monique Barbieux-Flammang ◽  
Carl Th. Pedersen ◽  
Allan T. Bech ◽  
...  
Keyword(s):  
Gas Phase ◽  
Radical Cations

Organische Schwefelverbindungen, XXXIII CO2-Eliminierung aus Radikalkationen von Thiolestern in der Gasphase: Intramolekulare Sauerstoff-Wanderung vom (C+3/C+3)-Typ / Organic Sulfur Compounds, XXXIII CO2 Elimination from Gaseous Radical Cations of Thiol Esters: Intramolecular Oxygen Transfer of (C+3/C+3)-Type

1979 ◽  
Vol 34 (2) ◽  
pp. 316-320 ◽  
Author(s):  
Bernd Kohne ◽  
Klaus Praefcke ◽  
Helmut Schwarz
Keyword(s):  
Gas Phase ◽  
Oxygen Transfer ◽  
Collisional Activation ◽  
Radical Cations ◽  
Ester Group ◽  
Reaction Sequence ◽  
Thiol Ester ◽  
Organic Sulfur Compounds ◽  
Thiol Esters ◽  
First Time

Abstract It is shown for the first time that under electron impact conditions an intramolecular oxygen transfer is possible from the thiol ester funtion onto the carbon atom of a second thiol ester group. The reaction sequence is terminated by CO2 elimination and the proposed structure of the resulting product ion is based on 13 carbon labelling experiments and collisional activation mass spectrometry. In addition, some unusual examples of ring contraction processes in the gas phase are reported.

C2H2N2 Isomers in the gas phase: Characterization of CH2N-CN and HNCH-CN by collisional activation mass spectrometry

1987 ◽  
Vol 137 (3) ◽  
pp. 241-244 ◽  
Author(s):  
Curt Wentrup ◽  
Primoz Lorencak ◽  
André Maquestiau ◽  
Robert Flammang
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Collisional Activation ◽  
Phase Characterization

Formation and Characterization of AcetonitrileN-Methylide [CH3CNCH2]•+andN-Methylketenimine [CH3NCCH2]•+Radical Cations in the Gas Phase

1998 ◽  
Vol 102 (5) ◽  
pp. 861-869 ◽  
Author(s):  
P. Gerbaux ◽  
R. Flammang ◽  
M. T. Nguyen ◽  
J.-Y. Salpin ◽  
G. Bouchoux
Keyword(s):  
Gas Phase ◽  
Radical Cations

Reactivity Trends in the Gas Phase Addition of Acetylene to N-protonated Aryl Radical Cations

2020 ◽  
Author(s):  
Oisin Shiels ◽  
P. D. Kelly ◽  
Cameron C. Bright ◽  
Berwyck L. J. Poad ◽  
Stephen Blanksby ◽  
...  
Keyword(s):  
Gas Phase ◽  
Ion Trap ◽  
Radical Cations ◽  
Rate Coefficients ◽  
Similar Process ◽  
Ion Molecule Reactions ◽  
Aromatic Radicals ◽  
Polycyclic Aromatic ◽  
Gas Phase Ion ◽  
Type Radical

<div> <div> <div> <p>A key step in gas-phase polycyclic aromatic hydrocarbon (PAH) formation involves the addition of acetylene (or other alkyne) to σ-type aromatic radicals, with successive additions yielding more complex PAHs. A similar process can happen for N- containing aromatics. In cold diffuse environments, such as the interstellar medium, rates of radical addition may be enhanced when the σ-type radical is charged. This paper investigates the gas-phase ion-molecule reactions of acetylene with nine aromatic distonic σ-type radical cations derived from pyridinium (Pyr), anilinium (Anl) and benzonitrilium (Bzn) ions. Three isomers are studied in each case (radical sites at the ortho, meta and para positions). Using a room temperature ion trap, second-order rate coefficients, product branching ratios and reaction efficiencies are reported. </p> </div> </div> </div>

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